Bottle stopper



FIG. 1 is a perspective view of a bottle stopper;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a third perspective view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a front elevation view thereof;

FIG. 7 is a left elevation view thereof;

FIG. 8 is top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

The broken lines are shown for the purpose of illustrating parts of the article that form no part of the claimed design. 

CLAIM The ornamental design for a bottle stopper, as shown and described. 